. Zoology. Zoology. 104 ZOOLOGY. both scutum and Bcutcllum, the two not being separately developed. The fore wings are long and narrow, and thicker than the binder, which are broad thin, and membranous, and most active in flight, Deiug folded up like a fan when at rest and tucked away out of siglit under the fore wings, which act as wing-covers. Turning now to the side of the body (Fig. 128), we see that the side of each of the middle and hind thoracic rings is composed of two pieces, the anterior, episternum, resting on the sternum, witli the epimerum behind it; these pieces are vertically hi
. Zoology. Zoology. 104 ZOOLOGY. both scutum and Bcutcllum, the two not being separately developed. The fore wings are long and narrow, and thicker than the binder, which are broad thin, and membranous, and most active in flight, Deiug folded up like a fan when at rest and tucked away out of siglit under the fore wings, which act as wing-covers. Turning now to the side of the body (Fig. 128), we see that the side of each of the middle and hind thoracic rings is composed of two pieces, the anterior, episternum, resting on the sternum, witli the epimerum behind it; these pieces are vertically high and narrow, and to them the leg is inserted by three pieces, called respectively coxa, troc/tantine, Siud trochanter(seeFig. 128), the latter forming a true joint of the leg. The legs consist of five well-marked joints, the femur (thigh), tibia (shank), and tarsus (foot), the latter consisting in the locust of three joints, the third bearing two large claws with a pad between them. The hind legs, especially the femur and tibia, are very large, adapted for hopping. The sternum is broad and large in the middle and hind thorax, but small and obscurelj' limited in the prothorax, with a large conical projection Ficj 129,.lFront view Ijetwecn the legs. of the head of C. The head is mainly in the adult locust composed svretus. £. Epicra- â . , . / n i *i â â tti- mo nium; C, clypeus; 01 ''^ Single piece (called the epicranmm, rigs. 12o L, labrum; o o, and 129 -E), which carries the compound eyes, ocelli; c, eye; a, an- ,,. , ,_,. ,â_ ^ -, » tenna; md, niandi- ocelli, or Simple eyes (t ig. i39, e), and antennse. ble; rnx, portion of While there are in reality four primary segments maxilla uncovered *' ' J & by the labrum; p. in the head of all winged insects, corresponding p';'"' to "le four pairs of appendages in the head, the posterior three segments, alter early embryonic life in the locust, become obsolete, and are mainly represented by
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1897
